Plastic Pall Ring (Cross Rib Type) Product Description

The Plastic Pall Ring (Cross Rib Type) is a high-performance random packing manufactured from injection-molded engineering plastics. Its defining feature is the cross-shaped internal rib structure (井字型加强筋), which divides the ring interior into four quadrants, significantly increasing mechanical strength and crush resistance compared to standard Pall rings with米字型 or simple internal tongues. The cylindrical body is punched with two rows of windows and inwardly bent tongues—and in some versions, horizontal stripes are added to the internal ribs to further enhance liquid distribution and structural rigidity. This optimized design achieves an excellent balance of high voidage (>91%), low pressure drop, and efficient gas-liquid contact. It is widely used in degasser towers, scrubbing towers, absorption columns, and desulfurization systems across chemical, metallurgical, and environmental protection industries, conforming to HG/T 3986-2016.

Product Highlights

• Higher Mechanical Strength: The cross-rib (井字型) internal structure provides superior compressive strength and crush resistance, preventing deformation in deep packed beds and high-load operations.
• Horizontal Stripes for Enhanced Performance: The horizontal stripe design on the internal ribs improves liquid spreading and structural rigidity, further optimizing mass transfer efficiency.
• Multi-Material Availability: Manufactured in PE, PP, RPP, PVC, CPVC, PVDF, PTFE, and HDPE to suit a wide range of chemical environments and operating temperatures.
• Large Voidage & Low Pressure Drop: Void fraction exceeding 91% ensures free gas and liquid passage, reducing energy consumption and allowing higher throughput.
• Anti-Clogging & Self-Cleaning: The open window design and smooth plastic surface resist scale build-up and solids accumulation, maintaining stable operation in fouling services.
• Proven in Degasser Towers: Specifically designed and widely used as mass transfer media in degasser towers for removing dissolved gases from water and process liquids.